Add 20/56 and 5/72
20/56 + 5/72 is 215/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
20/56 = 20 × 9/56 × 9 = 180/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
5/72 = 5 × 7/72 × 7 = 35/504 - Add the two like fractions:
180/504 + 35/504 = 180 + 35/504 = 215/504 - So, 20/56 + 5/72 = 215/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56+5/72 20/56+10/72 60/56+5/72 20/56+15/72 20/56+25/72 20/56+35/72